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Finding the Fourth Proportional to 108.76, 162.56 and 104.44

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Solution

The fourth proportional to 108.76, 162.56 and 104.44 is: 156.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108.76 : 162.56 = 104.44 : x
  2. Step 2: Convert to fraction form
    108.76/162.56 = 104.44/x
  3. Step 3: Cross multiply
    108.76x = 162.56 × 104.44
  4. Step 4: Simplify right side
    108.76x = 16,977.77
  5. Step 5: Solve for x
    x = 16,977.77/108.76
  6. Step 6: Final answer
    x = 156.10

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.